/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:09:50,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:09:50,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:09:50,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:09:50,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:09:50,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:09:50,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:09:50,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:09:50,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:09:50,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:09:50,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:09:50,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:09:50,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:09:50,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:09:50,482 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:09:50,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:09:50,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:09:50,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:09:50,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:09:50,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:09:50,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:09:50,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:09:50,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:09:50,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:09:50,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:09:50,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:09:50,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:09:50,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:09:50,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:09:50,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:09:50,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:09:50,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:09:50,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:09:50,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:09:50,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:09:50,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:09:50,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:09:50,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:09:50,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:09:50,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:09:50,488 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:09:50,489 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:09:50,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:09:50,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:09:50,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:09:50,707 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:09:50,707 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:09:50,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-subst.wvr_bound2.c [2023-08-04 02:09:51,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:09:52,148 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:09:52,148 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-subst.wvr_bound2.c [2023-08-04 02:09:52,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ea3b73f/8b4974bf967d419aa466e8f646afcc18/FLAG2f284f86c [2023-08-04 02:09:52,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ea3b73f/8b4974bf967d419aa466e8f646afcc18 [2023-08-04 02:09:52,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:09:52,186 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:09:52,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:09:52,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:09:52,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:09:52,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270f7ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52, skipping insertion in model container [2023-08-04 02:09:52,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,237 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:09:52,509 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-subst.wvr_bound2.c[19505,19518] [2023-08-04 02:09:52,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:09:52,527 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:09:52,608 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-subst.wvr_bound2.c[19505,19518] [2023-08-04 02:09:52,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:09:52,619 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:09:52,619 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:09:52,624 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:09:52,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52 WrapperNode [2023-08-04 02:09:52,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:09:52,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:09:52,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:09:52,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:09:52,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,774 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2413 [2023-08-04 02:09:52,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:09:52,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:09:52,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:09:52,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:09:52,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:09:52,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:09:52,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:09:52,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:09:52,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (1/1) ... [2023-08-04 02:09:52,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:09:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:09:52,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 02:09:53,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:09:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:09:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:09:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:09:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:09:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:09:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:09:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:09:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:09:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 02:09:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:09:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:09:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:09:53,020 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 02:09:53,234 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:09:53,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:09:55,060 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:09:57,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:09:57,280 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-04 02:09:57,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:09:57 BoogieIcfgContainer [2023-08-04 02:09:57,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:09:57,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:09:57,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:09:57,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:09:57,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:09:52" (1/3) ... [2023-08-04 02:09:57,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe84c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:09:57, skipping insertion in model container [2023-08-04 02:09:57,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:09:52" (2/3) ... [2023-08-04 02:09:57,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe84c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:09:57, skipping insertion in model container [2023-08-04 02:09:57,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:09:57" (3/3) ... [2023-08-04 02:09:57,290 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-poker-hand-subst.wvr_bound2.c [2023-08-04 02:09:57,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:09:57,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:09:57,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:09:57,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:09:57,691 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 02:09:57,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,324 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 02:09:58,325 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:09:58,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6142 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 946. Up to 28 conditions per place. [2023-08-04 02:09:58,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:09:58,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:09:58,805 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 02:09:58,806 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:09:58,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6142 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 946. Up to 28 conditions per place. [2023-08-04 02:09:58,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 43560 [2023-08-04 02:11:17,611 INFO L134 LiptonReduction]: Checked pairs total: 52863 [2023-08-04 02:11:17,612 INFO L136 LiptonReduction]: Total number of compositions: 904 [2023-08-04 02:11:17,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:11:17,629 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cc8e662, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:11:17,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:11:17,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:11:17,673 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-04 02:11:17,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:11:17,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:17,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:17,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:17,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1528107116, now seen corresponding path program 1 times [2023-08-04 02:11:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607909778] [2023-08-04 02:11:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 02:11:18,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:18,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607909778] [2023-08-04 02:11:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607909778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:11:18,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:11:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:11:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130223737] [2023-08-04 02:11:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:11:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:11:18,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:11:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:11:18,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1678 [2023-08-04 02:11:18,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 83 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:18,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:18,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1678 [2023-08-04 02:11:18,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:26,534 INFO L124 PetriNetUnfolderBase]: 6115/7851 cut-off events. [2023-08-04 02:11:26,534 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-04 02:11:26,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 7851 events. 6115/7851 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28771 event pairs, 2466 based on Foata normal form. 0/3897 useless extension candidates. Maximal degree in co-relation 12842. Up to 7620 conditions per place. [2023-08-04 02:11:26,559 INFO L140 encePairwiseOnDemand]: 1670/1678 looper letters, 54 selfloop transitions, 6 changer transitions 22/85 dead transitions. [2023-08-04 02:11:26,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 370 flow [2023-08-04 02:11:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:11:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:11:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1976 transitions. [2023-08-04 02:11:26,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39253079062375845 [2023-08-04 02:11:26,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1976 transitions. [2023-08-04 02:11:26,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1976 transitions. [2023-08-04 02:11:26,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:26,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1976 transitions. [2023-08-04 02:11:26,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.6666666666666) internal successors, (1976), 3 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:26,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1678.0) internal successors, (6712), 4 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:26,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1678.0) internal successors, (6712), 4 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:26,618 INFO L175 Difference]: Start difference. First operand has 57 places, 83 transitions, 208 flow. Second operand 3 states and 1976 transitions. [2023-08-04 02:11:26,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 370 flow [2023-08-04 02:11:26,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 02:11:26,629 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 167 flow [2023-08-04 02:11:26,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-04 02:11:26,638 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 02:11:26,638 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 167 flow [2023-08-04 02:11:26,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:26,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:26,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:11:26,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:26,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash -590998041, now seen corresponding path program 1 times [2023-08-04 02:11:26,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723075488] [2023-08-04 02:11:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:11:26,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:26,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723075488] [2023-08-04 02:11:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723075488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:11:26,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:11:26,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:11:26,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718394174] [2023-08-04 02:11:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:11:26,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:11:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:11:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:11:27,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1678 [2023-08-04 02:11:27,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:27,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:27,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1678 [2023-08-04 02:11:27,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:29,555 INFO L124 PetriNetUnfolderBase]: 1648/2149 cut-off events. [2023-08-04 02:11:29,555 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 02:11:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 2149 events. 1648/2149 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6639 event pairs, 648 based on Foata normal form. 0/1121 useless extension candidates. Maximal degree in co-relation 4346. Up to 2098 conditions per place. [2023-08-04 02:11:29,567 INFO L140 encePairwiseOnDemand]: 1665/1678 looper letters, 54 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2023-08-04 02:11:29,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 311 flow [2023-08-04 02:11:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:11:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:11:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1962 transitions. [2023-08-04 02:11:29,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974970202622167 [2023-08-04 02:11:29,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1962 transitions. [2023-08-04 02:11:29,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1962 transitions. [2023-08-04 02:11:29,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1962 transitions. [2023-08-04 02:11:29,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 654.0) internal successors, (1962), 3 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:29,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1678.0) internal successors, (6712), 4 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:29,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1678.0) internal successors, (6712), 4 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:29,594 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 167 flow. Second operand 3 states and 1962 transitions. [2023-08-04 02:11:29,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 311 flow [2023-08-04 02:11:29,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:11:29,597 INFO L231 Difference]: Finished difference. Result has 48 places, 69 transitions, 223 flow [2023-08-04 02:11:29,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=48, PETRI_TRANSITIONS=69} [2023-08-04 02:11:29,598 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-08-04 02:11:29,598 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 69 transitions, 223 flow [2023-08-04 02:11:29,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:29,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:29,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:29,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 02:11:29,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:29,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:29,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1255835100, now seen corresponding path program 1 times [2023-08-04 02:11:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:29,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402746790] [2023-08-04 02:11:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:11:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402746790] [2023-08-04 02:11:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402746790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:11:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297466812] [2023-08-04 02:11:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:11:29,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:11:29,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 02:11:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:30,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-04 02:11:30,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:11:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:11:30,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:11:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:11:30,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297466812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:11:30,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:11:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-04 02:11:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706760459] [2023-08-04 02:11:30,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:11:30,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 02:11:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 02:11:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-04 02:11:31,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1678 [2023-08-04 02:11:31,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 69 transitions, 223 flow. Second operand has 8 states, 8 states have (on average 610.875) internal successors, (4887), 8 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:31,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:31,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1678 [2023-08-04 02:11:31,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:33,473 INFO L124 PetriNetUnfolderBase]: 1648/2176 cut-off events. [2023-08-04 02:11:33,474 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 02:11:33,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4472 conditions, 2176 events. 1648/2176 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6639 event pairs, 648 based on Foata normal form. 9/1161 useless extension candidates. Maximal degree in co-relation 4407. Up to 2095 conditions per place. [2023-08-04 02:11:33,482 INFO L140 encePairwiseOnDemand]: 1653/1678 looper letters, 45 selfloop transitions, 48 changer transitions 0/96 dead transitions. [2023-08-04 02:11:33,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 96 transitions, 493 flow [2023-08-04 02:11:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 02:11:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 02:11:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4976 transitions. [2023-08-04 02:11:33,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706793802145411 [2023-08-04 02:11:33,495 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4976 transitions. [2023-08-04 02:11:33,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4976 transitions. [2023-08-04 02:11:33,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:33,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4976 transitions. [2023-08-04 02:11:33,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 622.0) internal successors, (4976), 8 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:33,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1678.0) internal successors, (15102), 9 states have internal predecessors, (15102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:33,530 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1678.0) internal successors, (15102), 9 states have internal predecessors, (15102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:33,530 INFO L175 Difference]: Start difference. First operand has 48 places, 69 transitions, 223 flow. Second operand 8 states and 4976 transitions. [2023-08-04 02:11:33,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 96 transitions, 493 flow [2023-08-04 02:11:33,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:11:33,533 INFO L231 Difference]: Finished difference. Result has 55 places, 96 transitions, 441 flow [2023-08-04 02:11:33,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=441, PETRI_PLACES=55, PETRI_TRANSITIONS=96} [2023-08-04 02:11:33,534 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2023-08-04 02:11:33,535 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 96 transitions, 441 flow [2023-08-04 02:11:33,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 610.875) internal successors, (4887), 8 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:33,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:33,537 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:33,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 02:11:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:33,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:33,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1906916212, now seen corresponding path program 1 times [2023-08-04 02:11:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669639337] [2023-08-04 02:11:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:11:34,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669639337] [2023-08-04 02:11:34,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669639337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:11:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161909346] [2023-08-04 02:11:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:34,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:34,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:11:34,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:11:34,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 02:11:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:34,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 02:11:34,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:11:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:11:35,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:11:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:11:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161909346] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:11:35,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:11:35,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-04 02:11:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585891708] [2023-08-04 02:11:35,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:11:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-04 02:11:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-04 02:11:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-04 02:11:36,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1678 [2023-08-04 02:11:36,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 96 transitions, 441 flow. Second operand has 17 states, 17 states have (on average 609.5294117647059) internal successors, (10362), 17 states have internal predecessors, (10362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:36,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:36,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1678 [2023-08-04 02:11:36,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:38,529 INFO L124 PetriNetUnfolderBase]: 1648/2194 cut-off events. [2023-08-04 02:11:38,529 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 02:11:38,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2194 events. 1648/2194 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6726 event pairs, 648 based on Foata normal form. 11/1181 useless extension candidates. Maximal degree in co-relation 4509. Up to 2095 conditions per place. [2023-08-04 02:11:38,539 INFO L140 encePairwiseOnDemand]: 1653/1678 looper letters, 45 selfloop transitions, 66 changer transitions 0/114 dead transitions. [2023-08-04 02:11:38,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 765 flow [2023-08-04 02:11:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-04 02:11:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-04 02:11:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 9841 transitions. [2023-08-04 02:11:38,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36654499404052443 [2023-08-04 02:11:38,563 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 9841 transitions. [2023-08-04 02:11:38,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 9841 transitions. [2023-08-04 02:11:38,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:38,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 9841 transitions. [2023-08-04 02:11:38,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 615.0625) internal successors, (9841), 16 states have internal predecessors, (9841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:38,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1678.0) internal successors, (28526), 17 states have internal predecessors, (28526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:38,620 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1678.0) internal successors, (28526), 17 states have internal predecessors, (28526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:38,620 INFO L175 Difference]: Start difference. First operand has 55 places, 96 transitions, 441 flow. Second operand 16 states and 9841 transitions. [2023-08-04 02:11:38,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 765 flow [2023-08-04 02:11:38,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 709 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-04 02:11:38,631 INFO L231 Difference]: Finished difference. Result has 72 places, 114 transitions, 683 flow [2023-08-04 02:11:38,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=683, PETRI_PLACES=72, PETRI_TRANSITIONS=114} [2023-08-04 02:11:38,632 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-08-04 02:11:38,632 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 114 transitions, 683 flow [2023-08-04 02:11:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 609.5294117647059) internal successors, (10362), 17 states have internal predecessors, (10362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:38,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:38,635 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:38,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 02:11:38,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 02:11:38,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:38,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1062760595, now seen corresponding path program 2 times [2023-08-04 02:11:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:38,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159122339] [2023-08-04 02:11:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 02:11:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159122339] [2023-08-04 02:11:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159122339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:11:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24873805] [2023-08-04 02:11:39,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 02:11:39,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:11:39,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:11:39,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 02:11:40,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 02:11:40,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 02:11:40,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 02:11:40,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:11:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 02:11:40,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:11:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 02:11:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24873805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:11:40,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:11:40,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-04 02:11:40,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456472590] [2023-08-04 02:11:40,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:11:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-04 02:11:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-04 02:11:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-08-04 02:11:41,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1678 [2023-08-04 02:11:41,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 114 transitions, 683 flow. Second operand has 20 states, 20 states have (on average 609.3) internal successors, (12186), 20 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:41,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:41,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1678 [2023-08-04 02:11:41,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:43,700 INFO L124 PetriNetUnfolderBase]: 1648/2215 cut-off events. [2023-08-04 02:11:43,700 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 02:11:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4767 conditions, 2215 events. 1648/2215 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6606 event pairs, 648 based on Foata normal form. 21/1218 useless extension candidates. Maximal degree in co-relation 4664. Up to 2095 conditions per place. [2023-08-04 02:11:43,708 INFO L140 encePairwiseOnDemand]: 1654/1678 looper letters, 45 selfloop transitions, 87 changer transitions 0/135 dead transitions. [2023-08-04 02:11:43,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 135 transitions, 1073 flow [2023-08-04 02:11:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 02:11:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 02:11:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 8651 transitions. [2023-08-04 02:11:43,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682530223054657 [2023-08-04 02:11:43,726 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 8651 transitions. [2023-08-04 02:11:43,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 8651 transitions. [2023-08-04 02:11:43,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:43,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 8651 transitions. [2023-08-04 02:11:43,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 617.9285714285714) internal successors, (8651), 14 states have internal predecessors, (8651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:43,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1678.0) internal successors, (25170), 15 states have internal predecessors, (25170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:43,771 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1678.0) internal successors, (25170), 15 states have internal predecessors, (25170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:43,771 INFO L175 Difference]: Start difference. First operand has 72 places, 114 transitions, 683 flow. Second operand 14 states and 8651 transitions. [2023-08-04 02:11:43,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 135 transitions, 1073 flow [2023-08-04 02:11:43,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 135 transitions, 929 flow, removed 30 selfloop flow, removed 7 redundant places. [2023-08-04 02:11:43,776 INFO L231 Difference]: Finished difference. Result has 78 places, 135 transitions, 845 flow [2023-08-04 02:11:43,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=845, PETRI_PLACES=78, PETRI_TRANSITIONS=135} [2023-08-04 02:11:43,777 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 21 predicate places. [2023-08-04 02:11:43,777 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 135 transitions, 845 flow [2023-08-04 02:11:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 609.3) internal successors, (12186), 20 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:11:43,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:43,780 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:43,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 02:11:43,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:43,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:11:43,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1746239847, now seen corresponding path program 3 times [2023-08-04 02:11:43,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637756810] [2023-08-04 02:11:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 02:11:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637756810] [2023-08-04 02:11:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637756810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:11:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188186080] [2023-08-04 02:11:44,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 02:11:44,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:11:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:11:44,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:11:44,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 02:12:17,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-04 02:12:17,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 02:12:17,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 02:12:17,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:12:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 02:12:17,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:12:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 02:12:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188186080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:12:17,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:12:17,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-08-04 02:12:17,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874494258] [2023-08-04 02:12:17,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:12:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-04 02:12:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:12:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-04 02:12:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-08-04 02:12:19,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1678 [2023-08-04 02:12:19,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 135 transitions, 845 flow. Second operand has 29 states, 29 states have (on average 609.448275862069) internal successors, (17674), 29 states have internal predecessors, (17674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:12:19,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:12:19,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1678 [2023-08-04 02:12:19,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:21,497 INFO L124 PetriNetUnfolderBase]: 1648/2218 cut-off events. [2023-08-04 02:12:21,498 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 02:12:21,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 2218 events. 1648/2218 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6606 event pairs, 648 based on Foata normal form. 3/1203 useless extension candidates. Maximal degree in co-relation 4694. Up to 2095 conditions per place. [2023-08-04 02:12:21,508 INFO L140 encePairwiseOnDemand]: 1654/1678 looper letters, 45 selfloop transitions, 90 changer transitions 0/138 dead transitions. [2023-08-04 02:12:21,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 138 transitions, 1139 flow [2023-08-04 02:12:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-04 02:12:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-04 02:12:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12278 transitions. [2023-08-04 02:12:21,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658522050059595 [2023-08-04 02:12:21,527 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12278 transitions. [2023-08-04 02:12:21,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12278 transitions. [2023-08-04 02:12:21,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:21,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12278 transitions. [2023-08-04 02:12:21,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 613.9) internal successors, (12278), 20 states have internal predecessors, (12278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:12:21,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1678.0) internal successors, (35238), 21 states have internal predecessors, (35238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:12:21,570 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1678.0) internal successors, (35238), 21 states have internal predecessors, (35238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:12:21,570 INFO L175 Difference]: Start difference. First operand has 78 places, 135 transitions, 845 flow. Second operand 20 states and 12278 transitions. [2023-08-04 02:12:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 138 transitions, 1139 flow [2023-08-04 02:12:21,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 138 transitions, 1031 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-08-04 02:12:21,575 INFO L231 Difference]: Finished difference. Result has 92 places, 138 transitions, 953 flow [2023-08-04 02:12:21,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1678, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=953, PETRI_PLACES=92, PETRI_TRANSITIONS=138} [2023-08-04 02:12:21,576 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2023-08-04 02:12:21,576 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 138 transitions, 953 flow [2023-08-04 02:12:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 609.448275862069) internal successors, (17674), 29 states have internal predecessors, (17674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:12:21,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:21,579 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:12:21,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 02:12:21,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:21,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:12:21,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1263698579, now seen corresponding path program 4 times [2023-08-04 02:12:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:21,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887132541] [2023-08-04 02:12:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:12:22,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:12:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:12:22,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:12:22,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:12:22,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:12:22,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:12:22,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:12:22,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 02:12:22,612 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-08-04 02:12:22,614 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:12:22,614 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:12:22,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:12:23,290 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 02:12:23,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:24,997 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 02:12:24,997 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:12:25,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 46828 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3678. Up to 192 conditions per place. [2023-08-04 02:12:25,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:25,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:25,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:12:25,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:25,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:25,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:26,681 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 02:12:26,681 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:12:26,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 46828 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3678. Up to 192 conditions per place. [2023-08-04 02:12:27,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 148500 [2023-08-04 02:14:46,482 INFO L134 LiptonReduction]: Checked pairs total: 191154 [2023-08-04 02:14:46,482 INFO L136 LiptonReduction]: Total number of compositions: 1105 [2023-08-04 02:14:46,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:14:46,485 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cc8e662, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:14:46,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:14:46,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:14:46,579 INFO L124 PetriNetUnfolderBase]: 54/176 cut-off events. [2023-08-04 02:14:46,579 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:14:46,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:14:46,579 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:14:46,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:14:46,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:14:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -37061280, now seen corresponding path program 1 times [2023-08-04 02:14:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:14:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186414181] [2023-08-04 02:14:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:14:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:14:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:14:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:14:46,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:14:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186414181] [2023-08-04 02:14:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186414181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:14:46,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:14:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:14:46,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538703805] [2023-08-04 02:14:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:14:46,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:14:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:14:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:14:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:14:46,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 2056 [2023-08-04 02:14:46,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 762.6666666666666) internal successors, (2288), 3 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:14:46,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:14:46,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 2056 [2023-08-04 02:14:46,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand